23. Find the area of a square with perimeter 28cm – InterviewSolution

1.

23. Find the area of a square with perimeter 28cm

Answer»

Perimeter of square = 4×side28 = 4×sideside = 28/4 = 7Area of square = side × side = 7×7 = 49

Area of square = 1/2×(diagonal)²49 = 1/2×(diagonal)²Diagonal ² = 49×2 = 98Diagonal = ✓98 = 9.8cm

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